513: Difference between revisions
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==History== | ==History== | ||
The Type 513 was announced in 1949 and [[introduced in 1950]]. | |||
The initial announcement in 1949 (link below) listed the 513 at $1695, | The initial announcement in 1949 (link below) listed the 513 at $1695, | ||
weighing 60 pounds, with a low frequency cutoff of 5 Hz. | weighing 60 pounds, with a low frequency cutoff of 5 Hz. | ||